五龙寺西排土场边坡稳定性分析

Stability Analysis of the Slope of West Wulongsi Dump

露天矿排土场的规模庞大、地质条件复杂多变以及外部环境因素的不确定性导致排土场稳定性分析仍然面临着诸多挑战。以五龙寺西排土场为研究对象,采用极限平衡法中的简化毕肖普法对排土场边坡圆弧滑动面进行稳定性计算。结果表明,正常运用工况、非常运用工况下安全稳定性系数分别为1.145和1.062,满足规范和设计要求,表明排土场整体及台阶边坡均处于基本稳定状态,建议后期不再堆载及开挖而扰动排土场,避免影响坡体稳定性。

The large scale of open-pit dump,the complex and changeable geological conditions and the uncertainty of external environmental factors lead to the stability analysis of dump still facing many challenges.Taking west Wulongsi dump site as study object,the stability of the circular sliding surface of the dump slope is calculated by using the simplified Bishop method in the limit equilibrium method.The result shows that the safety stability coefficients under normal operating conditions and non-normal operating conditions are 1.145 and 1.062 respectively,which met the specifications and design requirements,indicating that the whole dump site and the step slope are in a basically stable state.It is suggested to not disturb the dump by loading and excavation in the later stage to avoid affecting the stability of slope.